Growing Pains

Because XMP is relatively new, you'll almost certainly encounter some growing pains if you try to work with a mixture of applications, some that support XMP, and others that as yet do not. There are two things you can do to lessen, if not eliminate, the pain.

Ask the vendors of those applications that don't yet support XMP to do so.

Learn how Photoshop and other Adobe and non-Adobe applications use XMP to record metadata, and find out just which files contain which pieces of information.